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ixgbe: pull all Tx init into ixgbe_configure_tx

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The Tx init was spread out over ixgbe_configure, ixgbe_configure_tx, and
ixgbe_up_complete.  This change combines all of that into the
ixgbe_configure_tx function in order to simplify the Tx init path.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck
2010-08-19 13:39:43 +00:00
committed by David S. Miller
parent a34bcfffae
commit 2f1860b8d9
1 changed files with 52 additions and 39 deletions
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91
drivers/net/ixgbe/ixgbe_main.c
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@@ -2436,8 +2436,16 @@ static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
u64 tdba = ring->dma;
int wait_loop = 10;
u32 txdctl;
u16 reg_idx = ring->reg_idx;
/* disable queue to avoid issues while updating state */
txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx),
txdctl & ~IXGBE_TXDCTL_ENABLE);
IXGBE_WRITE_FLUSH(hw);
IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
(tdba & DMA_BIT_MASK(32)));
IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
@@ -2448,6 +2456,38 @@ static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
ring->head = IXGBE_TDH(reg_idx);
ring->tail = IXGBE_TDT(reg_idx);
/* configure fetching thresholds */
if (adapter->rx_itr_setting == 0) {
/* cannot set wthresh when itr==0 */
txdctl &= ~0x007F0000;
} else {
/* enable WTHRESH=8 descriptors, to encourage burst writeback */
txdctl |= (8 << 16);
}
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
/* PThresh workaround for Tx hang with DFP enabled. */
txdctl |= 32;
}
/* reinitialize flowdirector state */
set_bit(__IXGBE_FDIR_INIT_DONE, &ring->reinit_state);
/* enable queue */
txdctl |= IXGBE_TXDCTL_ENABLE;
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
/* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
if (hw->mac.type == ixgbe_mac_82598EB &&
!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
return;
/* poll to verify queue is enabled */
do {
msleep(1);
txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
} while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
if (!wait_loop)
e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
}
static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
@@ -2497,13 +2537,22 @@ static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
**/
static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
u32 dmatxctl;
u32 i;
ixgbe_setup_mtqc(adapter);
if (hw->mac.type != ixgbe_mac_82598EB) {
/* DMATXCTL.EN must be before Tx queues are enabled */
dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
dmatxctl |= IXGBE_DMATXCTL_TE;
IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
}
/* Setup the HW Tx Head and Tail descriptor pointers */
for (i = 0; i < adapter->num_tx_queues; i++)
ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
ixgbe_setup_mtqc(adapter);
}
#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
@@ -3416,44 +3465,12 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
int i, j = 0;
int num_rx_rings = adapter->num_rx_queues;
int err;
u32 txdctl, rxdctl;
u32 dmatxctl;
u32 rxdctl;
u32 ctrl_ext;
ixgbe_get_hw_control(adapter);
ixgbe_setup_gpie(adapter);
if (hw->mac.type == ixgbe_mac_82599EB) {
/* DMATXCTL.EN must be set after all Tx queue config is done */
dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
dmatxctl |= IXGBE_DMATXCTL_TE;
IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
}
for (i = 0; i < adapter->num_tx_queues; i++) {
j = adapter->tx_ring[i]->reg_idx;
txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
if (adapter->rx_itr_setting == 0) {
/* cannot set wthresh when itr==0 */
txdctl &= ~0x007F0000;
} else {
/* enable WTHRESH=8 descriptors, to encourage burst writeback */
txdctl |= (8 << 16);
}
txdctl |= IXGBE_TXDCTL_ENABLE;
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
if (hw->mac.type == ixgbe_mac_82599EB) {
int wait_loop = 10;
/* poll for Tx Enable ready */
do {
msleep(1);
txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
} while (--wait_loop &&
!(txdctl & IXGBE_TXDCTL_ENABLE));
if (!wait_loop)
e_err(drv, "Could not enable Tx Queue %d\n", j);
}
}
for (i = 0; i < num_rx_rings; i++) {
j = adapter->rx_ring[i]->reg_idx;
rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
@@ -3530,10 +3547,6 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
e_err(probe, "link_config FAILED %d\n", err);
}
for (i = 0; i < adapter->num_tx_queues; i++)
set_bit(__IXGBE_FDIR_INIT_DONE,
&(adapter->tx_ring[i]->reinit_state));
/* enable transmits */
netif_tx_start_all_queues(adapter->netdev);